At first, babies need to eat about every 2 to 4 hours to help them get enough nutrition and to grow. This means you may need to wake your baby to feed.
Not getting enough to eat can slow down newborn weight gain. Newborns typically lose between 5 and 10 percent of their body weight, depending on delivery method, in the days after birth. They need to spend the first few weeks gaining it back.
All babies are different, but it's very common for babies not to feed all that much in the first 24-48 hours, and some don't attach at all. However, from day 2-3 days babies should become much more awake and feed in more frequent (but probably irregular) bursts at least 6 times in 24 hours.
Most babies usually feel hungry every 3 hours until about 2 months of age and need 4-5 ounces per feeding. As the capacity of their abdomen increases, they go longer between feedings. At 4 months, babies may take up to 6 ounces per feeding and at 6 months, babies might need 8 ounces every 4-5 hours.
In the first few weeks of life, breastfeeding should be "on demand" (when your baby is hungry), which is about every 1-1/2 to 3 hours. As newborns get older, they'll nurse less often, and may have a more predictable schedule. Some might feed every 90 minutes, whereas others might go 2–3 hours between feedings.
The amount of sleep an infant gets at any one stretch of time is mostly ruled by hunger. Newborns will wake up and want to be fed about every three to four hours at first. Do not let your newborn sleep longer than five hours at a time in the first five to six weeks.
Don't worry, baby will ask to be fed as usual as soon as his stomach feels empty again. Your baby may be constipated and appear less hungry than usual, however once this passes everything will go back to normal.
What happens if a newborn goes too long without feeding? Waiting too long to feed your newborn can lead to rapid weight loss, jaundice, and other health issues down the road.
As a rule of thumb, a truly hungry baby will rarely choose sleeping over eating. So, if your baby falls asleep in your arms without taking a full feeding, it's likely he was tired — not hungry.
Newborns who sleep for longer stretches should be awakened to feed. Wake your baby every 3–4 hours to eat until he or she shows good weight gain, which usually happens within the first couple of weeks. After that, it's OK to let your baby sleep for longer periods of time at night.
Most doctors will agree that you can stop intentionally waking your baby for night feedings around 3-4 months as long as they're showing stable weight gain and staying on their growth curve. However, some babies won't be able to sleep through the night without any feedings until closer to 9 months.
Some experts recommend a strategy called “switch nursing” — when baby starts nodding off, take her off the breast, stimulate her (hold her upright, talk to her, tickle her, rub her, burp her), and offer the other breast. Repeat this scenario until she's logged at least a good 10 to 15 minutes of feeding.
While waking up a sleeping baby might seem like a bad idea, frequent feedings early on are important for a couple of reasons: Crying is a late sign of hunger. The sooner you begin each feeding, the less likely you'll need to soothe a frantic baby.
Renee Kam (lactation consultant): Many exclusively breastfed babies feed 8 to 12 times in 24 hours, at least in the early weeks. This usually means feeding your baby every 2 to 3 hours. You might have one longer stretch between feeds, this could be up to 5 hours for a baby under 6 weeks.
If your baby is healthy, gaining weight, and seems content after most breastfeeds, they're getting what they need. Babies who are feeding well can take anywhere between five minutes and 40 minutes at each feed.
This can be a sign of illness, infection, or low blood sugar. Infants dehydrate easily and not eating can quickly turn into a medical issue. Generally, they shouldn't go without feeding for longer than five hours for their first 12 weeks.
“The most important signs of a starving newborn are constant crying (even after nursing) and near-constant feeding,” she tells PEOPLE. “Some babies never cry and are very sleepy, listless or lethargic from the start because they are already depleted of calories at birth.
Poor feeding, a lack of interest in feeding or a problem receiving the proper amount of nutrition, is a nonspecific symptom seen in newborn and young infants that can result from many conditions, including infection, metabolic disorders, genetic disorders, structural abnormalities, and neurological disorders.
First Weeks and Months
On average, most exclusively breastfed babies will feed about every 2 to 4 hours. Some babies may feed as often as every hour at times, often called cluster feeding. Or may have a longer sleep interval of 4 to 5 hours.
Check in with your health professional if your baby is consistently too sleepy to breastfeed to make sure they are not poorly or getting dehydrated. Hand expressing or pumping your milk will protect your milk supply and provide a breast milk supplement to keep your baby fed until they can breastfeed.
Most newborns sleep for around 8–9 hours during the day and 8 hours at night. Most also wake up at least every 3 hours to feed. However, this timing varies widely. Some newborns may only sleep for 11 hours per day, while others may sleep for up to 19 hours per day.
At about 2 months of age, babies usually take 4 to 5 ounces per feeding every 3 to 4 hours. At 4 months, babies usually take 4 to 6 ounces per feeding. At 6 months, babies may be taking up to 8 ounces every 4 to 5 hours.
So the American Academy of Pediatrics (AAP) advises parents to feed infants at least once every 2-3 hours — whenever babies show signs of hunger (AAP 2015). During the subsequent months, babies may be able to go longer between meals. But feeding responsively — on cue — remains the ideal approach.
And it's true: breast milk is digested more quickly than formula. For newborns, staying full for longer stretches may help them sleep for longer periods of time.
Signs that a baby is underfed or underfeeding include:
He fusses when put down. He demands full attention. He has trouble getting to sleep and staying asleep. He has four or less wet diapers (based on milk feeds alone).